Posted By: 
Josh AdamsPeter, 
Interesting question.  I think caramel cards are still as rare as people have thought.  In fact, more people are begining to realize how scarce E cards are, in relation to T cards. I estimate, based on observation and talking to others in our hobby, that there is 1 E card for every 300 T cards. The ratio increases with the harder E issues, such as E100, E103, E99, etc. 
I noticed a handful of E cards at the National.  I was able to pick up 3 E93s for my set, and saw a few E104s, E92s, and E102s floating around.